I think im cooked for alevel gp and econs

Im a jc2 student whos gonna writw alevels in literally a few months and i think im screwed for gp and h2 econs. For my myes i got c for gp and S for econs. For gp, i feel like my essay tends to lack solid examples and i dont really know how to weave the example into my point in a proper way. My bigger problem is in compre cos i always seem to only understand the qns and pasaages halway and it seems like i answer smth, they ask smth. Now for the bane of my existence, h2 econs, bro i cant even fully wrap my mind around the contebg and for the 8m 10m csq qns and the esaays, it seems like i cant answer in a well eloborated manner, like ik the concept but idk how to expand on it and mqke it seem well linked. Prelims is so close and im so stressed pls pls pls pls help guys thanks